{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,8]],"date-time":"2025-11-08T18:01:50Z","timestamp":1762624910057,"version":"build-2065373602"},"reference-count":72,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2022,9,29]],"date-time":"2022-09-29T00:00:00Z","timestamp":1664409600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"EnMAP scientific preparation program under the Space Agency at DLR with resources from the German Federal Ministry of Economic Affairs and Climate Action","award":["50EE1529"],"award-info":[{"award-number":["50EE1529"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The integration of imaging spectroscopy and aeromagnetics provides a cost-effective and promising way to extend the initial analysis of a mineral deposit. While imaging spectroscopy retrieves surface spectral information, magnetic responses are used to determine magnetization at both shallower and greater depths using 2D and 3D modeling. Integration of imaging spectroscopy and magnetics improves upon knowledge concerning lithology with magnetic properties, enhances understanding of the geological origin of magnetic anomalies, and is a promising approach for analyzing a prospective area for minerals having a high iron-bearing content. To combine iron diagnostic information from airborne hyperspectral and magnetic data, we (a) used an iron absorption feature ratio to model pseudo-magnetic responses and compare them with the measured magnetic data and (b) estimated the apparent susceptibility along the surface by some equivalent source modeling, and compared them with iron ratios along the surface. For this analysis, a Modified Iron Feature Depth index was developed and compared to the surface geochemistry of the rock samples in order to validate the spectral information of iron. The comparison revealed a linear increase in iron absorption feature depths with iron content. The analysis was performed by empirically modeling the statistical relationship between the diagnostic absorption features of hyperspectral (HS) image spectra of selected rock samples and their corresponding geochemistry. Our results clearly show a link between the spectral absorption features and the magnetic response from iron-bearing ultra\/-mafic rocks. The iron absorption feature ratio of Fe3+\/Fe2+ integrated with aeromagnetic data (residual magnetic anomaly) allowed us to distinguish main rock types based on physical properties. This separation matches the lithology of the Niaqornarssuit complex, our study area in West Greenland.<\/jats:p>","DOI":"10.3390\/rs14194877","type":"journal-article","created":{"date-parts":[[2022,9,29]],"date-time":"2022-09-29T23:09:29Z","timestamp":1664492969000},"page":"4877","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Integration of Hyperspectral and Magnetic Data for Geological Characterization of the Niaqornarssuit Ultramafic Complex in West-Greenland"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0541-5614","authenticated-orcid":false,"given":"Agnieszka","family":"Kuras","sequence":"first","affiliation":[{"name":"Faculty of Science and Technology, Norwegian University of Life Sciences, PB 5003, 1430 Aas, Norway"}]},{"given":"Bj\u00f6rn H.","family":"Heincke","sequence":"additional","affiliation":[{"name":"Geological Survey of Denmark and Greenland, 1350 Copenhagen, Denmark"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8999-603X","authenticated-orcid":false,"given":"Sara","family":"Salehi","sequence":"additional","affiliation":[{"name":"Geological Survey of Denmark and Greenland, 1350 Copenhagen, Denmark"}]},{"given":"Christian","family":"Mielke","sequence":"additional","affiliation":[{"name":"Rad.Data, 14482 Potsdam, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4282-8979","authenticated-orcid":false,"given":"Nicole","family":"K\u00f6llner","sequence":"additional","affiliation":[{"name":"German Research Centre of Geosciences, Telegrafenberg, 14473 Potsdam, Germany"},{"name":"Institute of Geosciences, University of Potsdam, 14476 Potsdam, Germany"}]},{"given":"Christian","family":"Rogass","sequence":"additional","affiliation":[{"name":"Helmholtz Centre for Environmental Research, 04318 Leipzig, Germany"}]},{"given":"Uwe","family":"Altenberger","sequence":"additional","affiliation":[{"name":"Institute of Geosciences, University of Potsdam, 14476 Potsdam, Germany"}]},{"given":"Ingunn","family":"Burud","sequence":"additional","affiliation":[{"name":"Faculty of Science and Technology, Norwegian University of Life Sciences, PB 5003, 1430 Aas, Norway"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"63","DOI":"10.2113\/gssajg.119.1.63","article-title":"Multi- and hyperspectral spaceborne remote sensing of the Aggeneys base metal sulphide mineral deposit sites in the Lower Orange River region, South Africa","volume":"119","author":"Mielke","year":"2016","journal-title":"S. 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